package com.ruoyi.dataserver.serialize;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;
import java.text.DecimalFormat;

/**
 * @ProjectName intelligent-city
 * @Package com.lab.dataserver.serialize
 * @ClassName DoubleSerialize
 * @Description 格式化JSON
 * @Company LAB
 * @Author LXK
 * @Date 2020/7/13 8:35
 * @UpdateUser
 * @UpdateDate
 * @UpdateRemark
 * @Version 1.0.0
 */
public class DoubleSerialize extends JsonSerializer<Double> {
    private DecimalFormat df = new DecimalFormat("0.00");
    @Override
    public void serialize(Double value, JsonGenerator gen, SerializerProvider serializers)
            throws IOException, JsonProcessingException {
        if(value != null) {
            gen.writeString(df.format(value));
        }
    }
}
